NBC's singing-talent show scored a 4.6 rating — down 19 percent from last week's 5.6 — among the advertiser-coveted demo Tuesday during the 10 o'clock hour. The Good Wife drew a 2.0 (11.59 million viewers), while Body of Proof snagged a 2.1 (10.30 million). Last week, The Voice finished first in total viewership.